Heroku highly recommends that you perform the version upgrade before support ends so that you can test compatibility, plan for unforeseen issues, and migrate your database on your own schedule. Heroku Postgres deprecates these versions to ensure no databases run on an unsupported major version of PostgreSQL. The PostgreSQL project stops supporting a major version five years after its initial release. To create a database on an older, supported PostgreSQL version use the –version flag with the addons:create command. Instances on deprecated versions are subject to forced upgrade attempts, database access restrictions, and database deletion for non-compliance. Deprecation processes are announced via the Changelog. The deprecation process for PostgreSQL versions in Heroku Postgres starts 1 year before its EOL date. However, you can upgrade your database PostgreSQL version at any point to gain the benefits of the latest version. Users are required to upgrade roughly one time every three years. Currently supported versions include: Tier ![]() Heroku currently offers Postgres version 15 as the default. Heroku Postgres supports at least 3 major versions at a given time. ![]() ![]() Heroku Postgres supports each major version shortly after its release. The PostgreSQL project releases new major versions on a yearly basis.
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